Laminated insole with arch support



Dec. 25, 1951 s LQEWI 2,579,592

` LAMINATED INSOLE WITH `ARCH SUPPORT Filed March 8, 1947 2 SHEETS-SHEET l FlcvS FIG-6 Dec. 25, 1951 s. LoEwl 2,579,592

LAMINATED INSOLE WITH ARCH SUPPORT Filed March 8, 1947 2 SHEETS-SHEET 2 FIC-.8 HC19 Patented Dec. 25, 1951 LAMINATED INSOLE WITH ARCH SUPPORT Siegfried Loewi, Tel Aviv, Palestine Application March 8, 1947, Serial No. 733,323 In `Palestine March 19, 1946 This invention relates to the manufacture of boots and shoes and has as 'its object to provide a new kind of insole providing an orthopedicarch support.

The invention consists in an insole for boots and shoes which is built up from several layers. namely an inner and outer sheet of leather or the like united along their edges, and a filling enclosed between them.

The filling is preferably so cut that it fits snugly into the space between the inner and outer leather sheets so that it can not budge and always retains its proper position. It may be made from any suitable sheet material, e. g. cork, cork fragments cemented by rubber or other suitable binders. felt, luifa or the like. Where it is desired to adapt the insole to the shape of the foot, a corresponding reinforcement may be provided in the filling. This may be a wedge glued to the filling sheet. In a preferred embodiment of the invention, the filling is again composed of two sheets between which the wedge is inserted.

The insole according to this invention is fixed to the upper and/or to the outsole in any suitable manner. For example, the edges of the inner and outer sheets of the insole may be made to project laterally from the filling so as to form a thin lip round a thicker central part. The lip serves for fixing the insole to the outsole andv the outwards turned edges of the upper by stitching down. Or else, the outer sheet of the insole may be made substantially equal in width to the filling and the edge of the wider inner sheet thereof is folded down over the sides of the filling and outer sheet, and the insole which is thus.obtained without a lip is surrounded by a welt to which the upper and outsole are xed in the usual way.

The invention can be applied to all usual kinds of boots and shoes, and with particular advantage to sandals.

The invention is illustrated, by way of example only, in the accompanying drawings in which:

Fig. 1 is a side elevation of a last serving for the manufacture of insoles according to the invention, seen from the side of the shank;

3 Claims. (Cl. 36-71) Fig. 2 is a horizontal section of the last on line II-II of Fig. l, showing also the inner sheet of the insole;

Figs. 3 to 5 show different stages of the manufacture of the insole, Figs. 3 and 5 being crosssections on line III--III of Fig. l, and Fig. 4 a fragmentary cross-section on line IV-IV of Fis. 1; l

Fig. 6 is a cross-section of the finishedinsole, while Fig. 'l is a cross-section of a shoe made with such insole;

Figs. 8.to 10 illustrate. similarly the manufacture of a shoe withV an insole according to a second embodiment of the invention;

Figs. 11 and 12 show similarly the manufacture of a shoe with an insole according to a third embodiment of the invention.

Turning first to Figs. 1 to 7, the last consists in the usual manner of a main portion I having the general shape of the foot, with a hollow shank portion 2, and an insert 3 in the instep portion. For the manufacture of normal footwear the last has the shape of a normal foot. For orthopaedic purposes the last may be given any special shape required by the deformities which the footwear is intended to remedy. In the sectional views of Figs. 2 to 5, the last has been shown, for the sake of simplicity, as if it were made all in one piece.

In the manufacture of an insole according to this invention, a. sheet 4 is put on the bottom of the last, with a margin I' projecting on all sides from the last. The sheet may consist of leather or any other suitable pliable material, for example, artificial leather, waterproofed canvas, plastic sheets or the like. The marginal portion 4 is now folded up and tacked to the sides of the last and the sheet is thereby stretched so tightly that it follows the curvature of the underside of the last. Then a lling sheet 5 is glued to the underside of sheet 4, again exactly following the shape of the underside of the last (Fig. 3). Sheet 5 may be made, for example, from cork, felt or the like material. It has substantially the outline of the foot, but is slightly narrower and shorter than the last. In the hollow 2 of the shank, a wedge 6 of cork or the like is then glued to the underside of sheet 5, its underside being substantially flush with the underside of sheet 5 outside the shank (Fig. 4). Therebeneath a further lling sheet l of cork or the like material is glued, coextensive with sheet 5, so that the wedge 6 is now enclosed between sheets 5 and l. Finally the outer sheet 8 of the insole,.which is made from a similar material as the inner sheet 4 and has substantially the same dimensions as` the latter, is glued to the underside of sheet l (Fig. 5). The last step in the manufacture of the insole now consists therein that the marginal portion 4' of the sheet 4 is detached from the last and folded down onto the edge of sheet 8 to which it is secured by gluing. The insole is now ready as self-contained unit (Fig. 6). l

Fig. 7 shows the manufacture of a shoe with such insole. The outturned edge portion 9 of the upper I0 is laid on the upper side of the marginal portion of the insole and covered by a welt Il, and an outsole I2 is applied to the underside of sheet 8 of the insole. All these parts are then joined by stitching down.`

The manufacture of the shoe is substantially simplified and facilitated 2,579,592 ,1 g y j built-in', part 'in' footwear, comprising in ccmbi'natio'nja top ply and `a bottom ply of flexible leather; a filling arranged between said top and f bottom plies, said filling consisting of two filling thereby. This method does not. correspond kto,

the known manufacture of either stitchdown or welt shoes. In the former, no insole at -all is provided but the outturned edges, of the upper Y A fillingand said wedge.

are directly stitched on the outsole which is the only sole. A normal, i. e. not composite, insole, could not be arranged on` stitchdown shoes other than by gluing it afterwards on the inner surface of .the 'outsole inside the upper, forA if it' were madefas' large as. the outsole and its ina-r-l` ginal portion `were inserted vbetween .the outturned .edge of .the upper and the. outsole, it` would in eifect'benothingbut a second'layer ofk the outsole itself. VWelt shoes, on the other hand, are made thereby that the uppenwith in.-

turned edges,.and the insole are firsty sewn to-y gether with the welt andthe latter is afterwards fixed tothe youtsole which is not directly connected with either the upper or insole.'

.'Figs. 8 tol() show another embodiment of the invention.rv The insolev is composed of an inner sheet 13, an outer sheet IA and a filling which in turn. consists of twosheets I5, I6 between which a wedge V(not shown); is inserted in the same way as in the case of the iirstembodiment described hereinbefore. The outer sheet. I4 of the insoleV is in this case substantially .coeXten-f sive with, the filling and its sidesfare chainfered,

and the marginal portions. I3' of4 the inner.

sheet I3 are foldeddown over Ythe sides of the filling and of sheet le and.' glued thereto. The insole is thus made without a lip. Fig. 8 shows the'insole made ready asv a unit'. To this insole, the upper I'! and a welt i8 are joined by stitch ing (Fig. 9). The-shoeis completed thereby that the outer sole l9is stitched in a known manner` to the welt i6 (Fig. 10). The loose cork filling necessary for shoes of the Goodyear welt type can be dispensed within view of the thickf' ness of the insole.

plication to shoes manufactured by gluingalone without stitching.` 'The' manufacture ofthe in sole itself is analogous to that 'shown in Fig.."'8,V with that difference that themarginal portion" said marginal Vportion 20': thereof. The space formed at the underside ofv the insole between the edges of portions 20' and 22 is filled out in the known manner with cork ora like mass A241 Finally, the outsole'25 is glued to the underside` ofsaid portion 22 and-thefilling mass 24% In all embodiments ofthe invention,'the"filling f sheets ofthe insole maybe so selected that *the insole Vis made waterproof `and/or -hea-t insula-t-'ff ing.- Cork, for-example, fulfils the -latter-pur1- pose, and sheets made from rubber-bonded cork' fragment serve both purposes.` The invention has thefurther advantagel that -no lining is re' quired for the insole-since-the uppervsheet .take'sf' the place thereof.

The insole may, of course, bemodifi'ed anysuitable manner not particularly-described and@ illustrated here.- .v

Vpliesbasically composed of cork; and an arch supporting wedge ndisposed between said t wo filling plies,r said top and bottom plies bemg united along their edges so as to enclose sa1d 2.' As 4a self-contained article of manufacture, a.-laminated insole for use as a permanently built-in part in footwear, comprising in combination.. a lton ply o; exible leather, said `top plyfharine Outer :margin beingarranged at aloyver levelthan the rmain portion of vsaid top ply; filling arranged between the main portion 'of said topf-ply and vsaid plane bottom ply, said filling consisting of two filling plies basically composedof corkyand anarch Supporting wedge disposed between said two filling plies, said top and bottom plies `being united along their edges seas to'enclose said` filling andmsaidA wedge and to provide-a lip surroundingthe raised remaining part of the insole for attachment. tothe upper and outerfsole of said footwear.

3. As a selfcontained article of manufacture,

a laminated insole for use vas a. permanently built-in part inffootwear, comprising. in. combination, atop ply and a vbottom ply of' flexible leather; a filling arranged between said top and bottom plies, said filling consisting Vof two filling plies` basically composed of cork; and an arch sporting'wedge .disposed between Vsaid two filling plies, said bottom ply being charnfered alongv the, edge thereof and said top ply projecting` on all sides over the chamfered edge. of saidbot-V tom pl'y and the flllingfplies Yand being secured to the chamfered edgeof the bottom plyfso as to enclose saidflli'ng and said wedge and to provi'd'a marginal portion for attachment tov the upper and outer s ole of said footwear. c

" Y' A ""SIEGFRIED LOEWI.

` REFERENCES errno ftlhe following-references are ofl record in the file o f this patent:

UNITED STATES PATENTS Number 'Name Date 325,785 Butterfield Sept. 8,1885 `848,77() `Roberts Apr. 2, 1907 "356,387 Belanger June 11, 1907 950,265 Kelly Feb. 22, 1910 l1,290,352 Reid Jan. 7, 1919 1,331,844 Fairweather Feb. 24, 1920 V1,588,011' Campbell June 8, 1926` 1,599,877 Dash Sept.. 14, 1926 1,678,739 vMac Donald et al. July 31, 1928 1,731,225 Schneider Oct. 8,1929 1,815,843" Higdem July 21, 1931 1,841,958'v Rosenwasser Jan. 12, 1932 1,845,934 Piekenbrock' Feb. 16, 1932 2,435,337 Billingsley Feb. 3, 1948 .f FOREIGN PATENTS Number Country Date 4,261v f Great Britain Dec. 29, 1894Y 6,280 Great Britain Mar. 28.1894 l. 16,758 Great Britain 'Mar. 2G, 1913 267,828. :Great Britain .Mar. 24, 192.7. 348,654 France Feb..1-7, 1905 462,732-5.

:Great Britain; Mar. 151937 a plane bottom ply of flexible leather; a'V 

